(3GdeSJNQL Ydi eSJOQc ddMGce GeGdi GdMGaX GdYQGbi (B/ s - (3GdYQGbi , GHhGdaVd YHOGdQMje Hf GdMSjf Hf YHOGdQMef Rjf GdOjf GdcQhfi s; (3GHhYHOGdQMef eMeO YHOGddgs ((3GdbGgQI (B: s (3ecJHI GdSfI ddfTQ hGdJhRjY , s, 1990)
Keywords: (3GdGMGOjK GdfHhjIs; (3GdMOjK (B- (3eSJNQLGJs